4 ms·
> The metre is traditionally defined as one ten-millionth part of the distance between the geographic north pole and the equator along the Paris meridian. Not
by jean-bonneau 9y ago
> The metre is traditionally defined as one ten-millionth part of the distance between the geographic north pole and the equator along the Paris meridian.
Not anymore:
"The metre is defined as the length of the path travelled by light in a vacuum in 1/299 792 458 seconds." [1]
[1] https://en.wikipedia.org/wiki/Metre https://en.wikipedia.org/wiki/Metre